Selection knob assembly



FIG. 1 is a top perspective view of a selection knob assembly;

FIG. 2 is a perspective view of the selection knob assembly shown in environmental use secured to a display monitor;

FIG. 3 is a front view of the selection knob assembly.

FIG. 4 is a rear view of the selection knob assembly;

FIG. 5 is top plan view of the selection knob assembly;

FIG. 6 is bottom plan view of the selection knob assembly;

FIG. 7 is a right side view of the selection knob assembly; and,

FIG. 8 is a left side view of the selection knob assembly.

The broken lines shown within the drawings illustrate features that form no part of the claimed design. 

CLAIM The ornamental design for a selection knob assembly, as shown and described. 